CN105675803B - Demarcate Gas device and method applied under balance pressure drilling UBD - Google Patents
Demarcate Gas device and method applied under balance pressure drilling UBD Download PDFInfo
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- CN105675803B CN105675803B CN201410665959.7A CN201410665959A CN105675803B CN 105675803 B CN105675803 B CN 105675803B CN 201410665959 A CN201410665959 A CN 201410665959A CN 105675803 B CN105675803 B CN 105675803B
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Abstract
The present invention provides a kind of Demarcate Gas device and method applied under balance pressure drilling UBD, and the device is included for the sampling bag for accommodating concentration known gas sample, sensor interface, sensor to be calibrated, the data collecting system for gathering the measurement value sensor to be calibrated；Sampling bag, sensor interface are connected by pipeline；Pipeline, which is provided with, is used for the gas inlet that concentration known gas sample injects sampling bag, and gas inlet is provided with valve；Sensor to be calibrated is connected between sensor interface and data collecting system.The Demarcate Gas device and method of the present invention can realize demarcation of the UBD scenes to gas concentration sensor, caliberating device is simple in construction, easy to operate, and scaling method is convenient and swift, and stated accuracy meets the required precision of drilling well industry, have great practical value, easily promote.
Description
Technical field
Under balance pressure drilling (Under Balance are applied to the present invention relates to oil-gas mining technology, more particularly to one kind
Drilling, referred to as：UBD Demarcate Gas device and method).
Background technology
In During Air Drilling, in fact it could happen that downhole safety risk mainly include stratum outlet, hole collapse, stratum and go out
Water, drilling string failure, down-hole blasting and stratum output toxic and harmful gas.The generation of these security risks can be to wellbore construction, people
Member's safety and economy cause certain loss.Therefore, the monitoring of During Air Drilling is just particularly important.UBD instruments by
The gas componant and concentration that line monitoring During Air Drilling is returned judge whether underground occurs abnormal conditions.But built in instrument
The working environment of sensor at the scene is severe, and output voltage can deviate original linear pass with concentration value after a period of operation
System, causes larger measurement error.Therefore the staking-out work of line sensor must be entered by certain interval of time at the scene.
At present, the conventional scaling method of gas concentration sensor is to be demarcated indoors using gas chromatograph, although
Its stated accuracy is high, but this method demarcation condition requires harsh, and the nominal time is longer, and job site is extremely difficult to demarcate bar
Part, therefore rely on the field calibration of the unsuitable UBD instruments of chromatograph scaling method.
The content of the invention
The present invention provides a kind of Demarcate Gas device and method, and demarcation of the UBD scenes to gas concentration sensor can be achieved,
Caliberating device is simple in construction, easy to operate, and scaling method is convenient and swift, and stated accuracy meets the required precision of drilling well industry, tool
There is very big practical value, easily promote.
The present invention provides a kind of Demarcate Gas device applied under balance pressure drilling UBD, including：
For accommodating the sampling bag of concentration known gas sample, it is sensor interface, sensor to be calibrated, described for gathering
The data collecting system of measurement value sensor to be calibrated；
The sampling bag, the sensor interface are connected by pipeline；
The pipeline, which is provided with, is used for the gas inlet that the concentration known gas sample injects the sampling bag, described
Gas inlet is provided with valve；
The sensor to be calibrated is connected between the sensor interface and the data collecting system.
The present invention also provides a kind of Demarcate Gas method applied under balance pressure drilling UBD, including：
Sampling bag receives concentration known gas sample from gas inlet, and the gas sample is pure standard specimen gas and air
Different proportion mixed gas, or the different proportion of pure standard specimen gas and nitrogen mixed gas；
Sensor interface gets the gas sample by the pipeline connected with the sampling bag, and transmits the gas
Sample gives sensor to be calibrated；
The sensor to be calibrated receives the gas sample, and exports the corresponding magnitude of voltage of the gas sample；
Data collecting system receives the magnitude of voltage, when the magnitude of voltage keeps stable, the magnitude of voltage after record is stable,
The measured concentration value for the concentration known gas sample that magnitude of voltage after the stabilization exports for the sensor to be calibrated；
The data collecting system is worth corresponding according to the concentration value of the concentration known gas sample, the measured concentration
Magnitude of voltage after the stabilization, fits the voltage of the sensor to be calibrated and the linear dimensions of concentration curve.
The Demarcate Gas device applied under balance pressure drilling UBD of the present invention, by comprising for accommodating concentration known gas
The sampling bag of body sample, sensor interface, sensor to be calibrated, the data acquisition system for gathering measurement value sensor to be calibrated
System；And connect sampling bag, sensor interface by pipeline；The injection sampling of concentration known gas sample is provided on pipeline
The gas inlet of bag, and valve is installed on gas inlet；Sensor to be calibrated is connected to sensor interface and data
Between acquisition system, it is achieved thereby that demarcation of the UBD scenes to gas concentration sensor, and caliberating device is simple in construction, operation
Convenient, scaling method is convenient and swift, and stated accuracy meets the required precision of drilling well industry, has great practical value, and easily pushes away
Extensively.
Brief description of the drawings
Structural representations of the Fig. 1 for the present invention applied to the embodiment one of under balance pressure drilling UBD Demarcate Gas device；
Structural representations of the Fig. 2 for the present invention applied to the embodiment two of under balance pressure drilling UBD Demarcate Gas device；
Flow charts of the Fig. 3 for the present invention applied to the embodiment one of under balance pressure drilling UBD Demarcate Gas method；
Fig. 4 is applied to the methane to be calibrated in the embodiment one of under balance pressure drilling UBD Demarcate Gas method shown in Fig. 3
CH4The voltage of sensor-concentration matched curve.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the present invention is clearly and completely described.It should be noted that in accompanying drawing or specification,
Similar or identical element all uses identical reference.
Structural representations of the Fig. 1 for the present invention applied to the embodiment one of under balance pressure drilling UBD Demarcate Gas device, such as
Shown in Fig. 1, the device of the present embodiment includes：
For accommodate the sampling bag 1 of concentration known gas sample, sensor interface 2, sensor to be calibrated 3, for gathering
The data collecting system 4 of the measured value of sensor 3 to be calibrated；Sampling bag 1, sensor interface 2 are connected by pipeline 5；Set on pipeline 5
There is the gas inlet 6 that sampling bag 1 is injected for concentration known gas sample, gas inlet 6 is provided with valve 7；It is to be calibrated
Sensor 3 is connected between sensor interface 2 and data collecting system 4.
Specifically, the Demarcate Gas device is used for the demarcation for treating calibration sensor 3, wherein, sampling bag 1 is used to accommodate
Know the gas sample of concentration, pipeline 5 is provided with gas inlet 6 and sensor interface 2, will be known dense by gas inlet 6
The gas sample injection sampling bag 1 of degree, gas inlet 6 is provided with valve 7, and sensor interface 2 is used to connect sensor to be calibrated
3, data collecting system 4 is connected with sensor 3 to be calibrated, and data collecting system 4 is used for the measurement number for gathering sensor 3 to be calibrated
According to.Sampling bag 1 is that twoport sampling bag 1 forms peripheral passage will pass through pipeline 5, and gas inlet 6 can be located at sampling bag 1
Either side.Equally, sensor interface 2 can also be arranged on the optional position of pipeline 5.Gas inlet 6 and sensor interface 2
It can be formed by setting three-way connection on pipeline 5.
In the caliberating device course of work, sampling bag 1 has buffer gas and gas pressure is kept and atmospheric pressure
Consistent and constant function so that demarcation is not influenceed by gas pressure change；Data collecting system 4 has to sensing to be calibrated
The real-time collection of the data of device 3, storage, the function of transmitting and show on a display screen；Valve 7 is mainly used in closing and opening gas
Inlet 6, so that staff injects gas toward sampling bag 1 is interior.
The Demarcate Gas device applied under balance pressure drilling UBD of the present embodiment, by comprising for accommodating concentration known
The sampling bag of gas sample, sensor interface, sensor to be calibrated, the data acquisition for gathering measurement value sensor to be calibrated
System；And connect sampling bag, sensor interface by pipeline；The injection of concentration known gas sample is provided on pipeline to take
The gas inlet of sample bag, and valve is installed on gas inlet；Sensor to be calibrated is connected to sensor interface sum
According between acquisition system, it is achieved thereby that demarcation of the UBD scenes to gas concentration sensor, and caliberating device is simple in construction, behaviour
Facilitate, scaling method is convenient and swift, stated accuracy meets the required precision of drilling well industry, has great practical value, easily
Promote.
Structural representations of the Fig. 2 for the present invention applied to the embodiment two of under balance pressure drilling UBD Demarcate Gas device, such as
Shown in Fig. 2, the device of the present embodiment on the basis of above-described embodiment one, in addition to：Air pump 8, air pump 8, sampling bag 1, sensing
Device interface 2 is connected by pipeline 5, and air pump 8 is for gas sample to be in the interior circulation of pipeline 5 and is well mixed.
Specifically, air pump 8 can use small air pump, what small air pump referred to is exactly minipump, because small volume is logical
Minipump is often called minipump or small air pump is directly.Minipump (i.e. minipump) refers to：Tool
Each one of air exhaust nozzle, the exhaust nozzle of standby one-in-and-one-out, and can persistently form at import vacuum or negative pressure；Shape at exhaust nozzle
Into pressure-fired；Working media is mainly gas, a kind of instrument of compact.Sampling bag 1 and air pump 8 are connected into by pipeline 5
Peripheral passage, sampling bag 1 is used for the gas sample for accommodating concentration known, and the gas sample that air pump 2 is used for the concentration known is circulated
And be well mixed, wherein, sampling bag 1 is that twoport sampling bag 1 forms peripheral passage will pass through pipeline 5 with air pump 8, and air pump 8 can
With located at the either side of sampling bag 1.That is, sampling bag 1, sensor interface 2, the three of air pump 8 are connected by pipeline 5,
Position of the three on pipeline does not have concrete regulation, can be arranged on the optional position of pipeline 5.Gas inlet 7 and sensor
Interface 8 can be formed by setting three-way connection in connecting pipeline 5, and air exhaust nozzle, the exhaust nozzle of air pump 8 are connected to pipe
On line 5, so that the gas sample of concentration known is in the interior circulation of pipeline 5 and is well mixed, so as to ensure that sensor 3 to be calibrated is measured
Concentration known gas sample constant concentration, improve concentration calibration precision.
It is to inject pure standard specimen gas and air (or nitrogen) by different proportion to sample in the course of work of the caliberating device
In bag 1, make gas in the passage interior circulation of closed pipeline 5 by opening air pump 8 and continue through sensor interface 2 and pass to and treat
Measurement data is recorded after calibration sensor 3, the output voltage stabilization of sensor 3 to be calibrated.The concentration of the gas sample of preparation should be equal
It is even to be distributed in zero between the maximum range of sensor 3 to be calibrated, the concentration of two end points of zero-sum maximum range is preferably included, or
There is the concentration close with two end points.More accurate calibration curve, i.e. voltage-concentration relationship curve can be so obtained, is made
Calibrated sensor is more accurate.Wherein carbon dioxide CO2The range of sensor is 0ppm to 50000ppm, carbon monoxide CO
The range of sensor is that between 0ppm to 1000ppm, the demarcation concentration of these sensors should be evenly distributed in zero and arrive maximum range
Between, sensor 3 even to be calibrated is CO2Sensor, the CO of gas sample2Even concentration is distributed between 0ppm to 50000ppm；
If sensor 3 to be calibrated is CO sensors, the CO even concentrations of gas sample are distributed between 0ppm to 1000ppm；If waiting to mark
Sensor 3 is determined for CH4Methane transducer, the CH of gas sample4The molar concentration of methane is evenly distributed between 0%~4%.It is dense
Degree can not be distributed in some minizone, it should the whole ranges and concentration ratio to be determined of blanketing gas concentration sensor
It is uniformly distributed in the range of maximum range.If sensor 3 to be calibrated is hydrogen sulfide H2Sensor, the H of gas sample2S concentration is equal
It is even to be distributed between 0ppm to 50ppm, and the H of gas sample2S concentration includes 10ppm and 20ppm.H2S threshold limit value 10ppm with
Under be for the comparatively safe H of human body2S concentration, if more than threshold limit value 10ppm, people, which knows from experience, not to feel well, if reaching, safety is dense
Degree limiting value 20ppm can then alarm.So for H2The demarcation concentration of sensor, which should also contain 10ppm, 20ppm two, to be had
The concentration value of particular safety meaning.In addition, for being rubbed when the molar concentration for the nitrogen oxygen content that cephacoria nitrogen is isolated minimum 5%
That concentration, but the nitrogen oxygen content that the general film nitrogen in scene is isolated is 5%~8% molar concentration, if therefore sensing to be calibrated
Device 3 is O2Sensor, the O of gas sample2Molar concentration is evenly distributed between 5%~21%, and the O of gas sample2Mole
Concentration includes 5% and 8%.Different gas concentration ratios enables to sensor 3 to be calibrated to obtain different output voltages, therefore
Straight line is fitted with the corresponding output voltage of sensor 3 to be calibrated according to concentration known gas sample, so as to wait to mark to this
Determine sensor 3 to be corrected.
The Demarcate Gas device applied under balance pressure drilling UBD of the present embodiment, by comprising for accommodating concentration known
Sampling bag, sensor interface, air pump, sensor to be calibrated, the number for gathering measurement value sensor to be calibrated of gas sample
According to acquisition system；And connect sampling bag, air pump, sensor interface by pipeline；Concentration known gas is provided on pipeline
Body sample injects the gas inlet of sampling bag, and installs valve on gas inlet；Sensor to be calibrated is connected to biography
Between sensor interface and data collecting system, gas sample in-line is circulated and is well mixed using air pump, it is ensured that gas
Concentration of specimens homogeneous constant, it is achieved thereby that UBD demarcation of the scene to gas concentration sensor, and caliberating device it is simple in construction,
Easy to operate, scaling method is convenient and swift, and stated accuracy meets the required precision of drilling well industry, has great practical value,
Easily promote.
Flow charts of the Fig. 3 for the present invention applied to the embodiment one of under balance pressure drilling UBD Demarcate Gas method, such as Fig. 3
Shown, the method for the present embodiment includes：
Step 101, sampling bag receive concentration known gas sample from gas inlet, and the gas sample is pure standard specimen gas
With the mixed gas of the mixed gas of the different proportion of air, or the different proportion of pure standard specimen gas and nitrogen.
Specifically, by pure standard specimen gas, such as carbon dioxide CO2Gas, carbon monoxide CO gases, methane CH4Gas, vulcanization
Hydrogen H2S gases, oxygen O2Etc. the gas sample that pure standard specimen gas and air are blended various concentrations by different proportion；Or will be upper
State pure standard specimen gas and the gas sample of various concentrations is blended by different proportion with nitrogen.Then by the gas sample of concentration to be calibrated
In this injection sampling bag.
Step 102, sensor interface get the gas sample by the pipeline connected with sampling bag, and transmit the gas
Sample gives sensor to be calibrated.
Step 103, sensor to be calibrated receive the gas sample, and export the corresponding magnitude of voltage of the gas sample.
Step 104, data collecting system receive the magnitude of voltage, when the magnitude of voltage keeps stable, the electricity after record is stable
Pressure value, the measured concentration value for the concentration known gas sample that the magnitude of voltage after this is stable exports for sensor to be calibrated.
Because gas sample in-line is circulated, air pressure fluctuation can be caused so that the output electricity of sensor to be calibrated
Pressure value is fluctuated, it is necessary to wait for a period of time, and after voltage value stabilization to be output, the concentration known gas is recorded by data collecting system
The corresponding magnitude of voltage of body sample, that is, measure obtained concentration value.
Step 105, data collecting system are worth corresponding stabilization according to the concentration value of concentration known gas sample, measured concentration
Magnitude of voltage afterwards, fits the voltage of sensor to be calibrated and the linear dimensions of concentration curve.
101~step 104 of above-mentioned steps is repeated in, until completing the detection of all concentration gases samples to be calibrated.Root
According to multigroup magnitude of voltage and concentration value fitting voltage-concentration relationship curve, the linear dimensions of the voltage-concentration curve fitted is write
Enter the demarcation that director demon completes sensor to be calibrated.
Further, on the basis of above method embodiment one, the method for the present embodiment also includes：Pipeline is arranged on to lead to
Air pump on road is mixed to the gas sample in pipeline, so that the circulation of gas sample in-line, even concentration.
The step specifically can be by opening air pump, such as small air pump or minipump so that gas sample is in envelope
The pipeline internal circulation flow closed, so that the even concentration of the gas sample is constant, it is ensured that the essence of gas sample measurement of concetration
Degree.
For the ease of the field conduct of the scaling method of the present invention, syringe is usually prepared for so that scene carries out gas sample
Preparation.Syringe can include each one of 10ml, 100ml syringe.Scene has various gas standard specimens, such as titanium dioxide simultaneously
Carbon CO2Gas, carbon monoxide CO gases, methane CH4Gas, hydrogen sulfide H2S gases, oxygen O2Etc. pure standard specimen gas and air or
The gas sample for the various concentrations that person's nitrogen is blended by different proportion.
Below specific demarcating steps are introduced by taking a variety of sensors to be calibrated as an example：By caliberating device connect communication line and
Power supply；Connection, which is finished, to be powered, and runs the field monitoring program of the caliberating device, checks whether communication is normal；Check the mark
Determine whether device has gas leakage；Sampling bag and air pump are connected after without gas leakage；Demarcation to methane transducer, is noted with 100ml first
Emitter injects a certain amount of methane and air into gas sampling bag by valve according to concentration needed for difference, opens air pump and follows
Ring；After after methane transducer output voltage stabilization, the concentration value of the magnitude of voltage gathered and gas sample is recorded.Will according to monitoring
Ask, at least need five different methane concentrations to demarcate methane transducer, to ensure the standard of voltage-concentration matched curve
True property.To H2The demarcation of sensor, first by the methane CH of last time demarcation4Gas is emptied, into sampling bag according to required mark
Determine concentration injection air and H2S, opens air pump and is circulated, treat H2After sensor output voltage stabilization, the voltage of collection is recorded
Value and gas sample concentration value.At least need five different H2S concentration is to H2Sensor is demarcated.CO sensors are carried out
Demarcation, the same H of scaling method2The scaling method of sensor.To CO2The demarcation of sensor, connects nitrogen cylinder, first with certain flow
Gas in sampling bag and pipeline is blown sky, CO by nitrogen2After sensor output voltage is stable, the zero point value is recorded, to sampling bag
It is interior to inject nitrogen and CO according to concentration needed for difference2, open air pump and circulated, treat CO2After sensor output voltage is stable, note
Record the magnitude of voltage and gas sample concentration value of collection.At least need five different CO2Concentration is to CO2Sensor is demarcated.It is right
O2The demarcation of sensor, connects nitrogen cylinder, the gas in sampling bag and pipeline first is blown into sky, O with the nitrogen of certain flow2Sensing
After device output voltage stabilization, the zero point value is recorded, because the oxygen content of air is known, therefore the mixed of air and nitrogen can be passed through
Close to obtain the mixed gas of different oxygen concentrations, nitrogen and air are injected according to concentration needed for difference into sampling bag, open gas
Pump is circulated, and treats O2After sensor output voltage is stable, the magnitude of voltage and gas sample concentration value of collection are recorded.At least need
Five different O2Concentration is to O2Sensor is demarcated.All the sensors are both needed to carry out secondary reverse demarcation, so as to ensure to wait to mark
Determine the accuracy of transducer calibration curve.
Further, it is known that the concentration value of concentration gases sample should be dense including zero in the range of transducer range to be calibrated
Angle value, Cmax value, at least three are evenly distributed on concentration value between zero-dose value and Cmax value.That is,
Concentration for the gas sample of preparation should be evenly distributed in zero between the maximum range of sensor to be calibrated, preferably include zero
With the concentration of two end points of maximum range, or there is the concentration close with two end points.It can so obtain more accurately demarcating
Curve, i.e. voltage-concentration relationship curve, make calibrated sensor more accurate.
Wherein carbon dioxide CO2The range of sensor is that 0ppm to 50000ppm, the range of carbon monoxide CO sensors are
Between 0ppm to 1000ppm, the demarcation concentration of these sensors should be evenly distributed in zero between maximum range, even to be calibrated to pass
Sensor is CO2Sensor, the CO of gas sample2Even concentration is distributed between 0ppm to 50000ppm；If sensor to be calibrated is
CO sensors, the CO even concentrations of gas sample are distributed between 0ppm to 1000ppm.If in addition, also having sensor to be calibrated
For CH4Methane transducer, the CH of gas sample4The molar concentration of methane is evenly distributed between 0%~4%.Concentration can not be distributed
In some minizone, it should whole ranges of blanketing gas concentration sensor and concentration ratio to be determined is in maximum range
In the range of be uniformly distributed.If sensor to be calibrated is hydrogen sulfide H2Sensor, the H of gas sample2S even concentrations are distributed in 0ppm
To between 50ppm, and the H of gas sample2S concentration includes 10ppm and 20ppm.H2S threshold limit value 10ppm is the following is for human body
Comparatively safe H2S concentration, if more than threshold limit value 10ppm, people, which knows from experience, not to feel well, if reaching safe concentration limiting value
20ppm can then alarm.So for H2The demarcation concentration of sensor, which should also contain 10ppm, 20ppm two, has particular safety
The concentration value of meaning.In addition, for minimum 5% molar concentration of molar concentration for the nitrogen oxygen content isolated when cephacoria nitrogen,
But the nitrogen oxygen content that the general film nitrogen in scene is isolated is 5%~8% molar concentration, if therefore sensor to be calibrated 3 is O2
Sensor, the O of gas sample2Molar concentration is evenly distributed between 5%~21%, and the O of gas sample2Molar concentration bag
Containing 5% and 8%.Different gas concentration ratios enable to sensor to be calibrated to obtain different output voltages, therefore according to
Know that concentration gases sample output voltage corresponding with sensor to be calibrated fits straight line, so as to the sensor to be calibrated
It is corrected.Table 1 is to methane CH4Sensor demarcated obtained by tables of data；Fig. 4 is to be applied to underbalance shown in Fig. 3 to bore
Voltage-concentration matched curve of methane CH4 sensors to be calibrated in the embodiment one of well UBD Demarcate Gas method.Fig. 4 is
The methane CH to be calibrated that voltage and concentration in the data of table 1 are fitted4The voltage of sensor-concentration matched curve, passes through
Fitting and linear regression coefficient R2=0.9989 obtains methane CH to be calibrated4Voltage-concentration relationship of sensor is：Y=
0.234x+0.612。
Table 1 is to methane CH4Sensor demarcated obtained by tables of data
| Sequence number | Voltage (mV) | CH4Volume (ml) | Volume of air (ml) | CH4Molar concentration (%) |
| 1 | -2.92 | 0 | 1250 | 0 |
| 2 | 1.05 | 10 | 1240 | 0.8 |
| 3 | 4.33 | 20 | 1230 | 1.6 |
| 4 | 7.8 | 30 | 1220 | 2.4 |
| 5 | 11.02 | 40 | 1210 | 3.2 |
| 6 | 14.31 | 50 | 1200 | 4 |
The demarcation of sensor will be completed in the program of the linear dimensions writing controller of the curve fitted.
It should be noted that the volume of sampling bag can be considered zero before injection gas sample, although in air pump and therewith
There is the gas of certain volume, but this volume is relative to the sampling bag volume after inflation in the pipeline of connection, less than thousand/
One, so, other gases before demarcation in air pump and pipeline are to the shadow of the concentration of the gas sample of concentration known configured
Ring less than one thousandth, meet simple on-site Fast Calibration requirement.In addition, alternatively, being configured in injection
Gas sample when, can be without sealing and circulating, that is to say, that gas sample is injected by valve, disconnect sampling bag and valve it
Between pipeline, gas sample injects by valve, and gas sample flows by air pump to sampling bag, is discharged by sampling bag, so,
Other gases before demarcation in air pump and pipeline can be come out by replacement completely, when gas sample injection rate reaches more than 3 times
Air pump and pipeline volume when, it is believed that other gases before demarcation in air pump and pipeline are ejected completely, are at this moment connected again
The pipeline between sampling bag and valve is connect, thus the concentration on the gas sample of concentration known does not influence, it is ensured that detection
Gas is the gas of the concentration known configured.
The Demarcate Gas method applied under balance pressure drilling UBD of the present embodiment, injects by using sampling bag from gas
Mouth receives concentration known gas sample, and the pipeline then connected by sensor interface with sampling bag gets the gas sample,
And the gas sample is transmitted to sensor to be calibrated；Then sensor to be calibrated receives the gas sample, and exports the gas sample
This corresponding magnitude of voltage；Then data collecting system receives the magnitude of voltage, when the magnitude of voltage keeps stable, after record is stable
The measured concentration value for the concentration known gas sample that magnitude of voltage after magnitude of voltage, stabilization exports for sensor to be calibrated；Data are adopted
Collecting system is worth the magnitude of voltage after corresponding stabilization further according to the concentration value of concentration known gas sample, measured concentration, fits and treats
The voltage of calibration sensor and the linear dimensions of concentration curve, it is achieved thereby that demarcation of the UBD scenes to gas concentration sensor,
And caliberating device is simple in construction, easy to operate, scaling method is convenient and swift, and stated accuracy meets the required precision of drilling well industry,
Have great practical value, easily promote.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (15)
1. a kind of Demarcate Gas device applied under balance pressure drilling UBD, it is characterised in that including：For accommodating concentration known
The sampling bag of gas sample, sensor interface, sensor to be calibrated, the data for gathering the measurement value sensor to be calibrated
Acquisition system；
The sampling bag, the sensor interface are connected by pipeline；
The pipeline, which is provided with, is used for the gas inlet that the concentration known gas sample injects the sampling bag, the gas
Inlet is provided with valve；
The sensor to be calibrated is connected between the sensor interface and the data collecting system；
The sampling bag is twoport sampling bag；
Also include：Air pump, the air pump, the sampling bag, the sensor interface are connected by the pipeline, and the air pump is used
In the gas sample is in the pipeline interior circulation and is well mixed.
2. device according to claim 1, it is characterised in that the air pump is minipump.
3. device according to claim 1 or 2, it is characterised in that the sensor to be calibrated is CO2Sensor, gas sample
This CO2Even concentration is distributed between 0ppm to 50000ppm.
4. device according to claim 1 or 2, it is characterised in that the sensor to be calibrated is CO sensors, gas sample
This CO even concentrations are distributed between 0ppm to 1000ppm.
5. device according to claim 1 or 2, it is characterised in that the sensor to be calibrated is H2Sensor, gas sample
This H2S even concentrations are distributed between 0ppm to 50ppm, and the H of gas sample2S concentration includes 10ppm and 20ppm.
6. device according to claim 1 or 2, it is characterised in that the sensor to be calibrated is O2Sensor, gas sample
This O2Molar concentration is evenly distributed between 5%~21%, and the O of gas sample2Molar concentration include 5% and 8%.
7. device according to claim 1 or 2, it is characterised in that the sensor to be calibrated is CH4Sensor, gas sample
This CH4Molar concentration is evenly distributed between 0%~4%.
8. device according to claim 1 or 2, it is characterised in that the gas inlet, sensor interface difference
Connected by three-way connection with the pipeline.
9. a kind of Demarcate Gas method applied under balance pressure drilling UBD, it is characterised in that including：
Sampling bag receives concentration known gas sample from gas inlet, the gas sample be pure standard specimen gas and air not
Mixed gas in proportion, or the different proportion of pure standard specimen gas and nitrogen mixed gas；
Sensor interface gets the gas sample by the pipeline connected with the sampling bag, and transmits the gas sample
To sensor to be calibrated；
The sensor to be calibrated receives the gas sample, and exports the corresponding magnitude of voltage of the gas sample；
Data collecting system receives the magnitude of voltage, when the magnitude of voltage keeps stable, and the magnitude of voltage after record is stable is described
The measured concentration value for the concentration known gas sample that magnitude of voltage after stable exports for the sensor to be calibrated；
The data collecting system according to the concentration value of the concentration known gas sample, the measured concentration be worth it is corresponding described in
Magnitude of voltage after stable, fits the voltage of the sensor to be calibrated and the linear dimensions of concentration curve；
Wherein, the sampling bag is twoport sampling bag；
Methods described also includes：
The air pump being arranged on the route profiling is mixed to the gas sample in the pipeline, so that the gas
Sample is in the pipeline interior circulation, even concentration.
10. method according to claim 9, it is characterised in that the sensor to be calibrated is CO2Sensor, gas sample
CO2Even concentration is distributed between 0ppm to 50000ppm.
11. method according to claim 9, it is characterised in that the sensor to be calibrated is CO sensors, gas sample
CO even concentrations be distributed between 0ppm to 1000ppm.
12. method according to claim 9, it is characterised in that the sensor to be calibrated is H2Sensor, gas sample
H2S even concentrations are distributed between 0ppm to 50ppm, and the H of gas sample2S concentration includes 10ppm and 20ppm.
13. method according to claim 9, it is characterised in that the sensor to be calibrated is O2Sensor, gas sample
O2Molar concentration is evenly distributed between 5%~21%, and the O of gas sample2Molar concentration include 5% and 8%.
14. method according to claim 9, it is characterised in that the sensor to be calibrated is CH4Sensor, gas sample
CH4Molar concentration is evenly distributed between 0%~4%.
15. method according to claim 9, it is characterised in that the concentration value of the concentration known gas sample includes institute
State the zero-dose value in the range of transducer range to be calibrated, Cmax value, at least three be evenly distributed on the zero-dose value
Concentration value between Cmax value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665959.7A CN105675803B (en) | 2014-11-19 | 2014-11-19 | Demarcate Gas device and method applied under balance pressure drilling UBD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665959.7A CN105675803B (en) | 2014-11-19 | 2014-11-19 | Demarcate Gas device and method applied under balance pressure drilling UBD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105675803A CN105675803A (en) | 2016-06-15 |
| CN105675803B true CN105675803B (en) | 2017-08-04 |
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| US4829809A (en) * | 1986-08-26 | 1989-05-16 | City Technology Limited | Gas calibration method and apparatus |
| DE29723567U1 (en) * | 1997-10-04 | 1999-02-18 | Wwu Wissenschaftliche Werkstat | Calibration device for gas analyzers |
| GB2362217B (en) * | 2000-05-11 | 2004-07-07 | Zellweger Analytics Ltd | Gas sensor calibration system |
| US7640783B2 (en) * | 2005-05-24 | 2010-01-05 | Honeywell International Inc. | Self-calibrating gas detector and method |
| US7661290B2 (en) * | 2007-07-20 | 2010-02-16 | Honeywell International Inc. | Gas sensor test and calibration system |
| CN101368927B (en) * | 2008-09-08 | 2011-10-19 | 无锡尚沃生物科技有限公司 | Self-calibration gas sensor |
| CN202512104U (en) * | 2012-02-07 | 2012-10-31 | 深圳市赛宝伦计算机技术有限公司 | Dynamic gas calibration instrument |
| US20130275053A1 (en) * | 2012-04-17 | 2013-10-17 | Selman and Associates, Ltd. | Computer implemented method for analyzing a gas sample using an inline gas analyzer |
| CN102778541B (en) * | 2012-08-07 | 2015-01-07 | 无锡市尚沃医疗电子股份有限公司 | Device and method for calibrating gas sensor |
| CN103399123B (en) * | 2013-07-12 | 2015-06-10 | 河南汉威电子股份有限公司 | Automatic gas sensor calibration system and gas sensor calibration method thereof |
| CN203672856U (en) * | 2013-10-31 | 2014-06-25 | 聚光科技(杭州)股份有限公司 | Gas calibration system |
| CN103616481B (en) * | 2013-12-03 | 2015-10-07 | 南京南瑞集团公司 | The scaling method of dissolved oxygen sensor and device |
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